Primer insert



FIG. 1 is an isometric view of a primer insert showing my new design.

FIG. 2 is a front view of a primer insert showing my new design.

FIG. 3 is a side view of a primer insert showing my new design.

FIG. 4 is a top view of a primer insert showing my new design.

FIG. 5 is a bottom view of a primer insert showing my new design.

FIG. 6 is a cross sectional view of a primer insert showing my new design; and,

FIG. 7 is an isometric cross sectional view showing the primer insert molded into a cartridge casing. 

CLAIM The ornamental design for a primer insert, as shown and described. 